Size gauging device



Sept. 8, 1953 w. F. ALLER SIZE GAUGING DEVICE 4 Sheets-Sheet 1 FiledJune 30, 1943 INVENIOR. M a. W M 2 M Sept. 8, 1953 w. F. ALLER 2,651,412

SIZE GAUGING DEVICE Filed June so, 1949 4 Sheets-$5961 2 INVENTOR. l 74;QZZM/ A/a/wZ M.

Sept. 8, 1953 w. F. ALLER SIZE GAUGING DEVICE 4 Sheets-Sheet 3 FiledJune 30 1949 INVENTOR.

Sept. 8, 1953 w. F. ALLER SIZE GAUGING DEVICE 4 sheets- -sheet' 4 FiledJune 50, 1949 n w m U f f B Patented Sept. 8, 1953 SIZE GAUGING DEVICEWillis Fay Aller, Dayton, Ohio, assignor to The Sheflield Corporation,Dayton, Ohio, a corporation of Ohio Application June 30, 1949, SerialNo. 102,320 8 Claims. (01. 209 s2) This invention relates to gaugingapparatus and more particularly to gauging apparatus adapted to gaugeand select articles in accordance with a dimension or dimensions.

In accordance with the present invention articles of generallycylindrical form such as king pins and the like are automaticallysupplied one at a time to a gauging station. At the gauging station thearticles are rotatably received in a gauging head and are automaticallyrotated a part of a revolution to condition an out-of-round gaugingapparatus responsive to an out-of-round condition. After thisconditioning operation takes place, a gauging and selecting circuit isenergized so that the continued rotation of the work, about its ownaxis, will automatically operate the selecting apparatus depending uponwhether or not the workpiece is of the required roundness. At the sametime out of roundness is being determined, the diameter of the workpieceis gauged at one or more points along its length and the selectingapparatus is automatically controlled in accordance with the responseobtained in the diameter gauging operation. As another workpiece issupplied, the gauged workpiece is moved along from the gauging head andis conveyed to a selected station so that acceptable and non-acceptableparts will be segregated from one another.

It is therefore an object of the invention to provide a gaugingapparatus having means for automatically conditioning an out-of-roundgauging apparatus and for effecting an automatic control in accordancewith the roundness of the articles.

Another object is the provision of a gauging apparatus of the charactermentioned in which the articles are supplied automatically by means of aconveyor arrangement to a position adjacent the supply location fromwhich the articles are moved out of the conveyor line of advance andthen fed forwardly into the gauging head.

Another object is the provision of a gauging apparatus having means forautomatically segregating gauged articles in accordance with out ofroundness, oversize diameter, and acceptable roundness and diameters.

Additional objects and advantages of the invention will be apparent fromthe following description, the appended claims, and the accompanyingdrawings, in which Fig. l is a perspective view of a gau pp ratusembodying the present invention;

Fig. 2 is a side elevation of the gauging apparatus with some of theparts broken away or sectioned for purpose of illustration;

Fig. 3 is a top plan view of a portion of the gauging apparatusincluding the gauging sta- Fig. .4 is a vertical sectional view takenlongitudinally through the gauging head on the line 4.' l of Fig.7;

Fig. 5 is a vertical section on the line 5-5 of Fig. 4;

Fig. 6 is a section on the line 6-6 of Fig. 3;

Fig. 7 is a vertical section on the line l! of Fig. 3;

Fig. 8 is a section on the line 8-8 of Fig. 2; Fig. 9 is a frontelevation showing the operatmg parts of the out-of-round gauge;

Fdig. i0 is a section on the line Ill-l0 of Fig. 9; an

Fig. 1-1 is a diagrammatic illustration of the electrical connections.

Referring more particularly to the drawing in which the same referencenumerals are used in the various views to designate like parts, thegauging apparatus as herein shown comprises a frame or base I 0 thelower portion of which contains driving and operating devices while theupper portion provides a support for the feeding means, the supplymeans, and for the gauging and segregating devices. In the particularform of construction illustrated, the gauging apparatus is designed togauge the diameter of parts such as a king pin for example and for au ithe out-of-round condition of the parts to s ei whether they satisfy therequired tolerance cond tions, the pins being selected in accordancewith the gauging results into three different groups. Parts that fallwithin the maximum and minimum diameter tolerances and within therequired roundness, are arranged in one group. Parts that are too muchout of round or that are undersize and thus not reclaimable are arrangedin a second group, while'parts that are too large in diameter but whichsatisfy the roundness requirement and are thus reclaimable are arrangedin the third group.

The parts to be gauged are placed by the operator on a feed belt orconveyor ll arranged between s1de rails l2. Each end of the conveyortravels over a pulley l3 which is continuously driven by means of a beltI4 operated from another pulley on a drive shaft I5 driven through beltI6 from a pulley wheel ll. An electric motor l8 operates through drivebelt l9, and suitable dr ving'mec'hanism including gear box 20 and driveshaft 2| to turn the shaft 22 on which the pulley I1 is fixed. I

Theconveyor H advances the article 24 until ing station The lengtlrofthis shi ft'enis slightly 1 less than the length of the article so thatonly one of the articles will be moved off the conveyor' H and the nextarticle on the conveyorwill then come up against the flat end 21 of theadvanced" shifter and be held against further advance, rid-' ing on thecontinuously movin'g coiiv-eyon l l wliich continues to urge the articleforwardly only by frictional engagement.

When the article is moved off the conveyor l l' by the shifter it ispushed laterally onto guide tracks 28 and a push bar 29 carried by lever30 (see Fig. 2)-is then moved axially soas'to push the article into thegauging head 3|"; Thepush bar 29 is then returned and the shifter 26returned and' another article "can then move'up against thestopfz-fi'by-the action-of the conveyor 1 1;

After a gauging operation takes place'with the articlein the gaugingstationpas will be presently described, another article is moved by theaction ofth 'shifter 26 and 'the feedbar 29 into the gauging station;pushing the -gauged ar'ti'cle out of the gauging station and onto aconveyor belt 33 which is car'rie'd 'on pulleys" S t-"and 35. The belt idriven-through a 'drivebelt 36" through a pulley wheel 31 onshaft*I5,-the-belt 33 operating'at considerably greater linear" speed"than the feed belt H which advances the articles to a position adjacentthe"-gaiiging station; The articles on the belt 33 travel up to thestop' '38 if theyar'e ofacceptable-size and roun'clness'. If they are'not of acceptable size 'androundness they 'will'be stoppedbe'forereaching'the abutment 38 by means of one'oi the'stop's 39-and Qpivotally mounted at fll and'mbvabl'ehownward against the actionoftension' springs AZ'under'th control of relays 43am M. Attilepropertime in the cycle'of operations following the "advancepf 'ea'ch gaugedarticle from the gauging station, thearticle on the conveyor belt 33 ispus'hedlate'rally'from the belt by'means oft-he s'hiftbar M- carried"atthaupper ends-'of pivoted-arms ll so'thatithe article can roll downone of *the three inclined troughs 48,-49 and-58,- shownhrFigri, andthus 'be'segregate'dinto-different groups *in accordance with theresults ofgthe gauging apparatus;

The lever-3Wis'moved forwardly bymeans of a spring 52 fashionedto anarm'53 which is fixed to=the lever 3fl and pivota-bly mounted ona shaft54;; Thecam operated roller SB-carried' by lever 3fl-'en ga ges-a-cam-56which is mounted on the shaft-22 and continuously driven by the motorIS. The shift bar 46- is timed'with the movements 0fthe-lever 30-asit'isdriven-from a cam 51 on the motor driven shaft-2i, cam '57 engaginga cam roller 58 on one of the arms 41 of the shift ban A tension spring'59 fastened toa suitable support at 6B holdsa tension roller Bl againstthe belt lfitomainta-inaproperdriving tension on the belt I On the shaft22 are switch operating cams- 63 and- -B-which control limit switches 65and -65avhich; time the start and stop of the gauging operationand holdselected solenoids for a predetermined time. The shaft 2| alsooperatesa-'cam 68 to drive a'lever 69 pivotably mounted on a shaft 10, the upperend of the lever-'69 carrying :theshifter--26,--see Figures 2 and 8.-

On the shaft 2| is a pulley wheel I2 driving a belt I3 that extends to apulley wheel 14 on shaft 15. Another pulley wheel 76 on the shaft 15operates a drive belt 71 (see Figs. 2, 4 and 7) and this belt ll extendsover three pulleys which are fixed respectively to three drive wheels18, 19 and 80. The drive wheels 18, 19 are mounted for rotation on theendwall of the gauging head 3| to rotate on axes and are s'olarranged asto contact lower portions of the rear end of an article i in the gaugingstation, while the upper drive wheel BG-iscarried on the end of a leverarm 8! and is norl'r'iallyraised out of contact with the articlealthough the arhi -tf can be lowered at the proper time in theff 'uenceof operations so as to bring the wheel' Bll' into contact with the topof the article after the article is in place in the gauging statiqn andcooperate with the drive rollers 18 and 'i in gripping the article tocause its rotation through a predetermined part of a revolution; Fixed=to--the lever 8t which is pivotably mounted on a shaft 82- is anarm-Was shown'in Figs. 1, 3 and-8. Thearm 83 is moved upwardly by aspring Stand is pulled downwardly at by a rodeconnected to-a lever-86having apully wheel iil that engagesg'a cam 88 driven by. the motor. Thecam -t8- -periodically:ata mode termined time-in the cycle moves-the roddown:

wardly and raises roller 88" from the article, but during theconditioning: and gauging parts of the cycle; the-cam8B'releases-the'rod'B5-so that the spring iii yieldingly holds;--thedrive roller 86 againstthe article.

Fig. 4 shows the 1 position to which the articleis advanced in thegaug-ing station -bythe action of the pus'hbar29. T In this-position theforward end of thearticle engages the-:spring-pressed finger as whichovercomes themomentum of the article, the other end 'of the-articleprojectingsufiiciently from v the gaug'ing station to "be engaged anddriven'by-the'rollers 13,19 and-8t While in' the gauging head-thediameter of -the article is gauged 'at twddiiferent points and for thispurpose the *gauging head- ='is-provided near each end with a seriesofradially spaced gaugingnozzlesel connectedtoa common-source of air underpressure and' to a commOn'prBSsRre-respohsive" gauging device that -isresponsive to the amount of leakage taking place between the ends of thegauging nozzlesan'd the outer surface'of the workpiece. Each 'ortheseseriesof gauging nozzles 'is' adapted to control a'pair of switchesresponsive to' oversize 'and' f undersize *condi-tions; for exampleasdisclosed in the prior application of Aller, Serial No 660,902, filedApril 10,-"19'46; now :Pat'en't No.- 2,4 65,'002.--

The central portion of the workpiece isgauged for roundne's's and asshown in Figs. '4 and '5, the gauging" head is providedwith threeradially spaced gauging nozzles 9K 92 'an'd t3;- all 'connected v to anf annular 'cliamber -s i which com munica'tes through apassage 95 with'a pressure responsive tube tfiso 'thait' as ai'i"un'der"constantpressure is applied from a regulated source "and through a Sui-tablerictio'ri iri the 'su'pply iline to the chamber"94fthe' afnount fleakage taking place through the nozales -will detei m'ine the pressurein the curved pressure respoh'sive tube =96 to "control a 'movable arm'93 having a=bi fiir cat'ed end in which are adjustable sc'reWsQQ and[0|]. The screw to is insulated from arm *98and the other screw99.iselectrical'ly corinebtd" to the arm.- Betweentrie-s acewserews-isa--con' tactarrn 101; pivotably"mountedonshaft H12 and frictionallyheldbn' :the 'shaftsothat it may be pushed by on'To'itneotnerortnescrews'sa;

screw applies a moving force to it. a 2

After the article is supplied to the station, the drive wheel 80 isbrought into engagement with the article to rotate it about 120 degreesto condition the out-of-round gauge in accordance with the extrememaximum or minimum radial dimension of the article. During thispreliminary movement of the article in the embodiment of the invention.shown, the arm 98 is first moved to the left to' a position determinedby the diameter of the article which determines-the pressure applied tothe tube 96. The arm 98 by screw I thus conditions arm IOI in accordancewith the largest diameter, and will then remain stationary if thearticle is practically round but if an out-of-round condition exists,and depending upon its degree, the arm 99 will move back afterconditioning the arm IOI, as the article is rotated and automaticallycontact the arm I9I if the out of roundness is such as to cause asufficient pressure decrease when the points of minimum radius are atthe gauging nozzles. If the minimum radius is close enough to themaximum radius to fall within the tolerance requirements then when thearm 98 moves to the right during gauging after the conditioning actionand during the continued rotation of the article, the screw 99 will notcontact the arm I9! and the circuit will not be completed. During theinitial rotation through 120 degrees, it will thus be understood thatthe outof-round gauge is automatically conditioned; then the limitswitch that initiates the gauging cycle is closed, as will be presentlydescribed, and during the next 120 degrees rotation of the workpiece aselecting or segregating relay will be closed or remain unenergizeddepending upon whether or not there is sufiicient out of roundnesspresent in the workpiece to fall outside the tolerance requirementsdetermined by the space setting of the screw 99 with respect to thescrew I00. In accordance with the present invention the conditioning ofthe contact I0! takes place before the actual gauging and selecting partof the cycle and it is immaterial whether the article is presented tothe gauging station with its maximum or minimum radius opposite theoutof-round gauging nozzles. In the particular arrangement of threeout-of-round gauging nozzles arranged 120 degrees apart an out ofroundness of cloverleaf form is detected but it will be obvious that thenumber and angular displacement of these nozzles may be so chosen as todetect out of roundness of oval or other shapes.

Reference is now made to the various electrical connections as shown inFig. 11, in which the switch controlling coils or relays are desig natedbynumbers and the switches they control are designated by the samereference numeral followed by a sufiix letter. In this figure the partsare shown in their normally deenergized position. Current is suppliedfrom a suit able source through the power switch I04 to a transformer I05 to energize the leads I09 and I91. The power switch I04 is alsoconnected through switches 509a to the motor I8, switches I98a beingnormally open but closed when relay coil I89 is energized by closing thestart switch I99. top switch H0 is normally closed and can be operatedto stop operations at any time. When the relay I08 is energized itcloses a holding switch I692) across the starting switch so that thestarting switch need be closed only temporarily. Manually operableswitches III gauging I and I I 2. are closed bythe operator, theseswitches being provided for setup purposes and romaine ing closed forautomatic operation.

The motor being in operation, a piston pin is supplied to the gaugingstation by the push bar and during'the retracting movements of the barthe cam operated switch 69 which is normally closed and the cam operatedswitch 65 which is normally open remain in their normal positions asshown in Fig. 11 and this condition continues until the workpiece in thegauging station is 1'0- tated about degrees and produces theconditioning action of the out-of-round gauging device. Thisconditioning action having been completed, the apparatus is ready for anactual gauging operation and at this time the cam 64 opens the switch 65and shortly thereafter cam 63 closes the switch 95. When the switch 00opens, a relay winding IN is deenergized thus opening a switch Hill) ofa holding circuit that maintains the settings of the selection circuitsas will be further described. When the switch 65 is closed, relaywinding H5 is energized to close switches 5a, H57), H50, HM and Seprovided in gauging circuits for gauging the two diameters near the twoends of the article and the out of roundness at the middle portion ofthe article. If the number one diameter is within tolerancerequirements, the pressure controlled switches H8 and II?! will both beclosed and current will flow through closed switches I I5a and use andenergize relays I20 and I2I which will close hold switches I20a and I2Iaconnected through the main hold switch 4b to line I 00. These relaysalso open switches I 201) and IZID to deenergize signal lamps MI andI40. They also open switches I200 and I2lc and close switch IZId. In asimilar manner the pressure controlled pair of gauging switches I23and-I24 control relays I25 and I26, relay I25 controlling switches I25a,I251), I250 and I25d, while relay i controls switches I26a and I2Iib andI260.

In this figure the switch I28 represents the switch provided by thecontacts 99 and IM automatically controlled by the out of roundness ofthe workpiece and this switch closes temporarily during the gaugingcycle, after having been conditioned as previously explained, if the outof roundness is excessive. As soon as this gauge closes, current flowsfrom one side of the line I06 through the switch lI5e which is closedduring the actual gauging operation by energization of the relay I I5,relay winding I30 which promptly closes switch I300, to complete aholding circuit from the line side "I01 through relay I30, closed switchI301], and to a lead wire I3I which is connected to the line side I06through closed hold switch li lb. Relay winding I30 also closes a switchI301) to complete a circuit through relay I32 which closes a switch I32aand opens switch I321). The opened switch. I32b prevents current fromflowing through the relay I33 of a salvage selection circuit and sincethe relay I33 is not energized, the switch I33a it controls will remainopen and no current will flow through the solenoid G9 which operates thestop 40 in order to arrest the motion of the articles on the conveyorand hold them opposite the guide trough 49. Those articles which are toomuch out of round will not be placed in the salvage selection group.

On the contrary, they will be segregated in the reject trough 48 becausethe stop 39 will be moved down under the control of the solenoid 43,energized by closing a switch I34a due to the energia on o re ay I34 eneized because. th sw ch even though perfectly round. willvalso-beisegregated in the reject trough'48' if :either .of .the switches1250 or" 1210' is closed-as will: occur if either of the two diameters.gauged istoo.;small, for .under these conditions :the switch H8 or theswitch I23: will .nottclose. and the relay 121" or.

I25 will not be energized.

The relay winding I33 :will be .energiZedLto close the switchi33an=andwenergize solenoid- 44.

to stop the article opposite the salvage trough 49 only if the outlofroundness is within tolerance and one or the other of theidiametersistoo large;

If the diameter is too large one vor the other of the switches H9 or124' will he opened to ide energize'the relay 120 or I26 so that' oneoriboth of- 'the switches 1200 and 126i:v will be closed.

Switchl-25d will beclcsed since current is flow closed since current isflowing through relay I21 and switch I322) will remain closed as. pree.

viously mentioned if the out of roundness excessive, so that a circuitwill becompleted through'relay l33 'to" line side I06 through closedswitches 1 4w and 1 12;

If neither ofthe relay windings I34 and 133 are-energizedas will be thecase'where the part isacceptable bothas to diameter and out. ofroundness; 'thenneither of the relay windings andfll will be energizedand the part gauged will trave1"down"until it reaches the stop 38' andbesubsequently pushed off into the trough ED and segregated with the otherparts which meet the gaugingtesh The function of the switche's 12th,4201), I252: and 126a, is to control the current flow through lamps I40;I41; 142 and 143 respectivelmior use in initially setting uplth'eapparatus.

Having completed the gauging operation while the article is in the-gauging head, and having completed "the setting 0f the several relaysand switches in accordance with the gauging results", the workpiece ispushed from the gauging stationby the-'applicationof a new workpiece :tothe gaugin'gsta-tion and is carried along' by :the con veyo'r- -belt-33andpushed on in thespropervplace so asi to be segregated in cheer the:other of' the' threetrou'ghs'; and it is only after this'occursthatthe'cam M temporarily opensthe cam -operatedhold switch 66 mdeenergize the winding H t-and *open the" various holding circuits thathave maintained the "gauge "controlling relays in their predeterminedpositions. About the same time or promptly after the switch'fifi closesagain; the cam controlled gauging switch '65 closesto start gauginganother article. Whilethe switch 65 is open and just beforethe gaugingoperation is actually started. by closing thisswitch the articlesupplied to'the gauging stationis heing rotated in its own axis tocondition thesetting ofthe contact 'lfll oi theout of-round-gauge;

The apparatus has been described-as adapted for segregation-pf the partsin accordance with diameters "at two i different -locations 'and inaccordan'ce without of roundness at the central portion of the article,and for segregation into one group of those parts that are over-size andthus'salvageable' if they 'satisfy the =roundness condition, although'theapparatus 1 maybe 1 cone struct-ed toprovide other groupings sand:se1ections as desired.: The-apparatus is capable of very-"rapidly'handling' articles supplied -to it :and in viewed the simplicityi ofthe construction and operationi-crdihe feeding and gaugin -mechanism,

there is assurancezthateone, article and-one articleorrly mri'llbeisuppliedirlorx each cycle of gauging operationsr: lt wi'llwalsobe-obvious'that the out of round achechvwill .be' accurately carried outinian automaticman'ner and .with great rapidity.

Whilexthe'zapparatus 'asiherein described constitutes a:preferredsembodiment' of the invention, :it :is 'therefore' torbe-understood that the invention "is not limited tothe .precise formdescribed, athat changesmay be made therein without departingfromthescope of the invention which'is defined theiappended claims.

Whatds claimed-is:

1. Gauginguappara'tus 1 comprising a gauging headlior' rotatablyreceiving .an article, means for rotating she-article about :its -ownaxis while in the .gaugingsheama gauging-circuit, anout-ofroundgauging'rmeans operatively connected to t-hies.sgaueing aheadand including an "operable gaugingrmember movable in acccrdance'withthe.

instantaneous changes'ina radial dimension of the article during ritsrotation and controlling said gauging oir-cult, enabling meansautomaticallyoperable after-1a predetermined rotation of the article forrendering said gauging circuit effestive, said out-of-roraidrgaugingmeans including a presettingmeans comprising-a pair of cooperatingswitch. contacts operably connected in said-gaugingicireuit; -meanssupporting one of said switch contacts :fM positiOhing-by the other, anoperative 'connection' between the presetting means :and said operablegauging. member to moveone f. saidswitch'contacts in one direction onlyduringsaidapredetermined rotation for positioning the ot-her switchcontact and automaticaily presetti'ng saidgauging means inaccordancerwith ran-extreme of thewvarious radialdimensions:ofutheartieie,and a timing connection between the'rotating-means and-the enabling means.

2. Gaugingaa-pparatus comprising a gauging head,- means'for supplying anarticle to be gauged to the gauging head-, means for rotating thearticle while in Ethegauging'lhead; a gauging circuit, an out-of-rounidgauginggmeans associated with the gauging :headand xincludingwanoperable gauging member'rmovable in accordance with the instantaneousmeasurement-pf a radial dimension=of the'article zdurin'gzthe rotationoithe article and also including switch :means" under the control =o'f'said gauging .member, said gauging means controlling 'said gaugingcircuit, enabling means io'r rendering saidzgauging circuit effective,means havingra rtimed connection to said rctatingimeansiorrautomatically operating said enablin means after some rotation ofthe article has takeniplace; and conditioning means operable duringsaidsrota'tion of the article i for automatically conditioning theswitch means of said gauging means ineaccordan-cewith the maximuminstantaneous radial dimensions of the article, said.conditioningmeangcomprisingra frictionally carried-contact element and a second contactelementfor adjusting the-first contact element in accordance with z themaximum instantaneous radiaL-dimension of the article.

.3. Gauging apparatuscomprising a gauging head for receiving an:article'to' be gauged, means ior'rotatinguthe articleabout a stationaryaxis while irr-thezgauginghead, a gauging circuit, an out-of-rcundgauging means operable connected to the. gauging headfor controllingsaid gauging circuit,i said gauging means including a member movableunfaccordance withthe instantaneous change in a radial dimension of thearticle during its rotation,-enabling mean for rendering said gauging'circuit effective, means having a timed connection to said rotatingmeans for automatically operating said enabling means after apredetermined rotation of the article, said outof-round gauging meansincluding a presetting means operable during said predetermined rotationof the article into a settingpositionand comprising an adjustableswitch-contact operably connected in said gauging circuit andcontrollably associated with said member for positioning thereby andautomatically presetting said gauging means for each gauging operationin accordance with an extreme radial measurement of the article.

4. Gauging apparatus comprising a gauging head having an axial passagefor rotatably receiving articles of generally cylindrical form, meansfor rotating the article about its axis while in the gauging head, meansfor supplying articles one at a time to said passage, a gauging circuit,an out-of-round gauging means operably connected to the gauging head andincluding an operable gauging member movable in accordance with theinstantaneous changes in a radial dimension of the article during itsrotation and a gauging switch controlled by said gauging member andcontrolling said gauging circuit, enabling means automatically operableafter some preliminary rotation of the article for rendering saidgauging circuit efiective, a timing connection between the rotatingmeans and the enabling means, said out-of-round gauging means includinga presetting means operable by said gauging member during saidpreliminary rotation for automatically presetting said gauging means inaccordance with the maximum radial dimension of the article, saidpresetting means comprising a movable switch element in said gaugingcircuit operable in one direction only by said gauging member, and afriction support for said element to retain the element frictionally ina position to which it is adjusted by the gauging member.

5. Gauging apparatus comprising a gauging head, power operated means forsupplying article to be gauged to the gauging head, means for rotatingthe article about its own axis while in the gauging head, means having atimed connection with the supplying means for initiating the rotation ofthe article, a gauging circuit, an out-of-round gauging meansoperatively connected to the gauging head for controlling said gaugingcircuit, enabling means having a timed connection with the supplyingmeans and operable in timed relation with the supplying means afterpredetermined amount of rotation of the article for rendering saidgauging circuit effective, and a presetting means forming a part of theout-of-round gauging means and including a pair of cooperating switchcontacts operably connected in said gauging circuit, one of which isfrictionally supported for adjustment by the other, said presettingmeans operating under control of the article into a setting positionduring said predetermined rotation of the article for automaticallypositioning the adjustable switch contact for each gauging operation inaccordance with an extreme radial measurement of the article.

6. Gauging apparatus comprising a gauging head having an axial passagethrough which articles to be gauged may be axially passed, means forsupplying articles to said gauging head, drive ans for o a g n a tic aout ts own axis while inth e gauging head, means for removing articlespassed from said gauging head, selecting means controlling the movementof the articles passing from the gauging head, a gauging circuit, anout-of-round gauging means operatively connected to the gauging head forcontrolling said gauging circuit, said gauging means including anoperable gauging member movable in accordance with" the instantaneouschange in a radial dimension of the article during its rotation, saidgauging circuit controlling said selecting means, enabling means forrendering said gauging circuit effective, timing means automaticallyoperable after a predetermined amount of rotation of the article whilein the gauging head for operating said enabling means, said out-ofroundgauging means further including a presetting means operable during saidpredetermined rotation of the article and including a friction supportedswitch element in said gauging circuit adjustably positioned by saidgauging member for automatically presettin said gauging means inaccordance with an extreme of the instantaneous radial dimensions of thearticle gauged during its rotation, and timing means for synchronizingthe operation of the supplying means and the drive means.

7. Gauging apparatus comprising a gauging head for receiving an articleto be gauged, means for rotating the article about a stationary axiswhile in the gauging head, a gauging circuit, an out-of-round gaugingmeans operatively connected to the gauging head for controlling saidgauging circuit, enabling means for rendering said gauging circuitefiective, means having a timed connection to said rotatin means forautomatically operating said enabling means after a predeterminedrotation of the article, and a presetting means forming a part of theout-of-round gauging means and including an adjustable switch contactoperatively connected in said gauging circuit, and operating undercontrol of the article into a setting position during said predeterminedrotation of the article for automatically positioning the adjustableswitch contact for each gauging operation in accordance with an extremeradial measurement of the article.

8. Gauging apparatus comprising a gauging head having an axial passagethrough which articles of generally cylindrical form may be passed,means for supplying articles to said gauging head, means for rotating anarticle about its own axis while in the gauging head, means for removing articles passed from said gauging head, selecting meanscontrolling the movement of the articles passing from the gauging head,a gauging circuit, an out-of-round gauging means operatively connectedto the gauging head and a diameter gauging means associated with thegauging head for controlling said gauging circuit and selectingcircuits, enabling means having a timed connection with said rotatingmeans and automatically operable after some preliminary rotation of thearticle while in the gauging head for rendering said gauging circuiteffective, and said out-of-round gauging means including a presettingmeans operable during said preliminary rotation of the articlecomprising a switch contact operably connected in said gauging circuitoperable in response to instantaneous changes in article diameter duringthe predetermined rotation of the article and a frictionally supportedswitch contact also operably connected in said gauging circuitcooperating therewith for automatically presetting said gauging means inaccordance WILLIS. FAY KILLER:-

References Cited in the file vof this. patent UNITED STATES PATENTS 7Number 1,586,155 1,726,657"

Name Date Keller 1 May 25,1926 Ekvafl' Sept, 73, 1929' Anderson" -7 Aug;'18, 1931 Numberz;

121 Name: Date Titus a. Dee 13, 1932 Leathermamz. Oct; 19, ,1943Federchakwt-al. June 20, 1944 Nordquist. July 11, 1944 Arde1-1---. Feb..6, 1945 Rockstroh Sept. 2, 1947 Diamomt; .June 3, 1947 Alleru Man 22,1949 Davis' Jan. 31, 1950

